Experimental Nanofluidics inside an individual nanotube

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URI: http://hdl.handle.net/2042/52565
Title: Experimental Nanofluidics inside an individual nanotube
Author: SIRIA, Alessandro; PONCHARAL, Philippe; BIANCE, A.L.; FULCRAND, Remi; PURCELL, Stephen; BOCQUET, Lyderic
Abstract: Building new devices that benefit from the strange transport behavior of fluids at nanoscales is an open and worthy challenge that may lead to new scientific and technological paradigms. We present here a new class of nanofluidic device, made of individual Boron-Nitride (BN) nanotube inserted in a pierced membrane and connecting two macroscopic reservoirs. We explore fluidic transport inside a single BN nanotube under electric fields, pressure drops, chemical gradients, and combinations of these. We measured in this transmembrane geometry that currents induced by a salinity contrast exceed by two orders of magnitude their pressure-driven counterpart. This result is ascribed to the remarkably large, pH dependent, surface charge bared by the BN nanotube. It corresponds to a produced power density in the kW/m2 range, orders of magnitude higher than reported with classical exchange membranes, and demonstrates the unique potential of BN nanotube membranes for energy conversion.
Subject: Optimisation; modélisation; Milieux poreux, microfluidique (S19)
Publisher: AFM, Maison de la Mécanique, 39/41 rue Louis Blanc, 92400 Courbevoie, France(FR)
Date: 2013-12-20

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